Clean up interface to PM and VFS

- introduce new call numbers, names, and field aliases;
- initialize request messages to zero for all ABI calls;
- format callnr.h in the same way as com.h;
- redo call tables in both servers;
- remove param.h namespace pollution in the servers;
- make brk(2) go to VM directly, rather than through PM;
- remove obsolete BRK, UTIME, and WAIT calls;
- clean up path copying routine in VFS;
- move remaining system calls from libminlib to libc;
- correct some errno-related mistakes in libc routines.

Change-Id: I2d8ec5d061cd7e0b30c51ffd77aa72ebf84e2565

lib/libsys/Makefile

@@ -85,7 +85,6 @@ SRCS+=  \
 	taskcall.c \
 	tickdelay.c \
 	timers.c \
-	vm_brk.c \
 	vm_cache.c \
 	vm_exit.c \
 	vm_fork.c \

lib/libsys/copyfd.c

@@ -12,5 +12,5 @@ copyfd(endpoint_t endpt, int fd, int what)
 	m.VFS_COPYFD_FD = fd;
 	m.VFS_COPYFD_WHAT = what;
 
-	return _taskcall(VFS_PROC_NR, COPYFD, &m);
+	return _taskcall(VFS_PROC_NR, VFS_COPYFD, &m);
 }

lib/libsys/getepinfo.c

@@ -13,7 +13,7 @@ getepinfo(endpoint_t proc_ep, uid_t *uid, gid_t *gid)
 	memset(&m, 0, sizeof(m));
 	m.PM_GETEPINFO_ENDPT = proc_ep;
 
-	if ((r = _taskcall(PM_PROC_NR, GETEPINFO, &m)) < 0)
+	if ((r = _taskcall(PM_PROC_NR, PM_GETEPINFO, &m)) < 0)
 		return r;
 
 	if (uid != NULL)

lib/libsys/getprocnr.c

@@ -11,7 +11,7 @@ getprocnr(pid_t pid, endpoint_t *proc_e)
 	memset(&m, 0, sizeof(m));
 	m.PM_GETPROCNR_PID = pid;
 
-	if ((r = _taskcall(PM_PROC_NR, GETPROCNR, &m)) < 0)
+	if ((r = _taskcall(PM_PROC_NR, PM_GETPROCNR, &m)) < 0)
 		return r;
 
 	*proc_e = m.PM_GETPROCNR_ENDPT;

lib/libsys/mapdriver.c

@@ -13,5 +13,5 @@ mapdriver(char *label, devmajor_t major)
 	m.VFS_MAPDRIVER_LABELLEN = strlen(label) + 1;
 	m.VFS_MAPDRIVER_MAJOR = major;
 
-	return _taskcall(VFS_PROC_NR, MAPDRIVER, &m);
+	return _taskcall(VFS_PROC_NR, VFS_MAPDRIVER, &m);
 }

lib/libsys/sef.c

@@ -231,8 +231,9 @@ void sef_exit(int status)
   sys_exit();
 
   /* If sys_exit() fails, this is not a system service. Exit through PM. */
-  m.m1_i1 = status;
-  _syscall(PM_PROC_NR, EXIT, &m);
+  memset(&m, 0, sizeof(m));
+  m.PM_EXIT_STATUS = status;
+  _syscall(PM_PROC_NR, PM_EXIT, &m);
 
   /* If everything else fails, hang. */
   printf("Warning: system service %d couldn't exit\n", sef_self_endpoint);

lib/libsys/srv_fork.c

@@ -8,7 +8,7 @@ srv_fork(uid_t reuid, gid_t regid)
 	message m;
 
 	memset(&m, 0, sizeof(m));
-	m.m1_i1 = (int) reuid;
-	m.m1_i2 = (int) regid;
-	return _taskcall(PM_PROC_NR, SRV_FORK, &m);
+	m.PM_SRV_FORK_UID = (int) reuid;
+	m.PM_SRV_FORK_GID = (int) regid;
+	return _taskcall(PM_PROC_NR, PM_SRV_FORK, &m);
 }

lib/libsys/srv_kill.c

@@ -8,7 +8,7 @@ srv_kill(pid_t pid, int sig)
 	message m;
 
 	memset(&m, 0, sizeof(m));
-	m.m1_i1 = pid;
-	m.m1_i2 = sig;
-	return _taskcall(PM_PROC_NR, SRV_KILL, &m);
+	m.PM_SIG_PID = pid;
+	m.PM_SIG_NR = sig;
+	return _taskcall(PM_PROC_NR, PM_SRV_KILL, &m);
 }

lib/libsys/vm_brk.c

@@ -1,20 +0,0 @@
-
-#include "syslib.h"
-
-#include <string.h>
-#include <minix/vm.h>
-
-/*===========================================================================*
- *                                vm_brk				     *
- *===========================================================================*/
-int vm_brk(endpoint_t ep, char *addr)
-{
-    message m;
-
-    memset(&m, 0, sizeof(m));
-    m.VMB_ENDPOINT = ep;
-    m.VMB_ADDR = (void *) addr;
-
-    return _taskcall(VM_PROC_NR, VM_BRK, &m);
-}
-